<template>
  <el-main>
    <!-- 新增按钮 -->

    <el-button type="success" plain icon="el-icon-plus" @click="openAddWindow()">新增</el-button>

    <!-- 数据表格 -->

    <el-table style="margin-top: 10px" :height="tableHeight" :data="menuList" row-key="id" default-expand-all
      :tree-props="{ children: 'children' }" :border="true" stripe>
      <el-table-column prop="label" label="菜单名称"></el-table-column>

      <el-table-column prop="type" label="菜单类型" align="center">
        <template slot-scope="scope">
          <el-tag v-if="scope.row.type == '0'" size="normal">目录</el-tag>

          <el-tag type="success" v-else-if="scope.row.type == '1'" size="normal">
            菜单</el-tag>

          <el-tag type="warning" v-else-if="scope.row.type == '2'" size="normal">
            按钮</el-tag>
        </template>
      </el-table-column>

      <el-table-column prop="icon" label="图标" align="center">
        <template slot-scope="scope">
          <i :class="scope.row.icon" v-if="scope.row.icon.includes('el-icon')">
          </i>

          <svg-icon v-else :icon-class="scope.row.icon"></svg-icon>
        </template>
      </el-table-column>

      <el-table-column prop="name" label="路由名称"></el-table-column>

      <el-table-column prop="path" label="路由地址"></el-table-column>

      <el-table-column prop="url" label="组件路径"></el-table-column>

      <el-table-column align="center">
        <template slot-scope="scope">
          <el-button type="primary" plain icon="el-icon-edit" size="small" @click="editMenu(scope.row)">编辑
          </el-button>
          <el-button type="danger" plain size="small" icon="el-icon-delete" @click="deleteMenu(scope.row)">删除
          </el-button>
        </template></el-table-column>
    </el-table>
    <!-- 新增或编辑弹框 -->
    <system-dialog :title="menuDialog.title" :width="menuDialog.width" :height="menuDialog.height"
      :visible="menuDialog.visible" @onClose="onClose" @onConfirm="onConfirm">
      <div slot="content">
        <el-form :model="menu" ref="menuForm" :rules="rules" label-width="80px" :inline="true" size="small">
          <el-row>
            <el-col :span="24">
              <el-form-item prop="type" label="菜单类型">
                <el-radio-group v-model="menu.type">
                  <el-radio :label="0">目录</el-radio>
                  <el-radio :label="1">菜单</el-radio>
                  <el-radio :label="2">按钮</el-radio>
                </el-radio-group>
              </el-form-item>
            </el-col>
          </el-row>
          <el-form-item prop="parentName" size="small" label="所属菜单">
            <el-input @click.native="selectParentMenu" v-model="menu.parentName" :readonly="true"></el-input>
          </el-form-item>
          <el-form-item prop="label" size="small" label="菜单名称">
            <el-input v-model="menu.label"></el-input>
          </el-form-item>
          <!-- <el-form-item size="small" label="菜单图标">
            <div class="chooseIcons">
              <el-popover placement="bottom" width="450" trigger="click">
                <span
                  slot="reference"
                  style="
                    display: inline-block;
                    width: 200px;
                    height: 33px;
                    line-height: 33px;
                  "
                >
                  <i :class="userChooseIcon"></i>
                  {{ userChooseIcon }}
                </span>
                <div class="iconList">
                  <i
                    v-for="item in iconList"
                    :key="item"
                    :class="item"
                    @click="setIcon(item)"
                    style="font-size: 20px"
                  ></i>
                </div>
              </el-popover>
            </div>
          </el-form-item> -->
          <el-form-item size="small" label="菜单图标">
            <my-icon @selecticon="setIcon" ref="child"></my-icon>
          </el-form-item>

          <el-form-item prop="name" v-if="menu.type == 1" size="small" label="路由名称">
            <el-input v-model="menu.name"></el-input>
          </el-form-item>
          <el-form-item prop="path" v-if="menu.type != 2" size="small" label="路由地址">
            <el-input v-model="menu.path"></el-input>
          </el-form-item>
          <el-form-item prop="url" v-if="menu.type == 1" size="small" label="组件路径">
            <el-input v-model="menu.url"></el-input>
          </el-form-item>
          <el-form-item prop="code" size="small" label="权限字段">
            <el-input v-model="menu.code"></el-input>
          </el-form-item>
          <el-form-item size="small" label="菜单序号">
            <el-input v-model="menu.orderNum"></el-input>
          </el-form-item>
        </el-form>
      </div>
    </system-dialog>
    <!-- 选择所属菜单弹框 -->
    <system-dialog :title="parentDialog.title" :width="parentDialog.width" :height="parentDialog.height"
      :visible="parentDialog.visible" @onClose="onParentClose" @onConfirm="onParentConfirm">
      <div slot="content">
        <el-tree style="font-size: 14px" ref="parentTree" :data="parentMenuList" node-key="id" :props="defaultProps"
          empty-text="暂无数据" :show-checkbox="false" default-expand-all :highlight-current="true"
          :expand-on-click-node="false" @node-click="handleNodeClick">
          <div class="customer-tree-node" slot-scope="{ node, data }">
            <!-- 长度为0说明没有下级 -->
            <span v-if="data.children.length == 0">
              <i class="el-icon-document" style="color: #8c8c8c; font-size: 18px" />
            </span>
            <span v-else @click.stop="openBtn(data)">
              <svg-icon v-if="data.open" icon-class="add-s" />
              <svg-icon v-else icon-class="sub-s" />
            </span>
            <span style="margin-left: 3px">{{ node.label }}</span>
          </div>
        </el-tree>
      </div>
    </system-dialog>
  </el-main>
</template>

<script>
//导入自定义图标组件
import MyIcon from "@/components/system/MyIcon.vue";

//导入自定义的icon图标库
import { elementIcons } from "@/utils/icons";
//导入对话框组件
import SystemDialog from "@/components/system/SystemDialog.vue";
//导入menu.js脚本代码
import menuApi from "@/api/menu";
export default {
  name: "menuList",
  //注册组件
  components: {
    SystemDialog,
    MyIcon,
  },
  data() {
    return {
      iconList: [], //图标列表
      userChooseIcon: "", //用户选中的图标

      //新增或编辑弹框属性
      menuDialog: {
        title: "",
        width: 630,
        height: 270,
        visible: false,
      },
      //菜单属性
      menu: {
        id: "",
        type: "",
        parentId: "",
        parentName: "",
        label: "",
        icon: "",
        name: "",
        path: "",
        url: "",
        code: "",
        orderNum: "",
      },
      rules: {
        type: [
          { required: true, trigger: "change", message: "请选择菜单类型" },
        ],
        parentName: [
          { required: true, trigger: "change", message: "请选择所属菜单" },
        ],
        label: [{ required: true, trigger: "blur", message: "请输入菜单名称" }],
        name: [{ required: true, trigger: "blur", message: "请输入路由名称" }],
        path: [{ required: true, trigger: "blur", message: "请输入路由路径" }],
        url: [{ required: true, trigger: "blur", message: "请输入组件路径" }],
        code: [{ required: true, trigger: "blur", message: "请输入权限字段" }],
      },
      //上级菜单弹框属性
      parentDialog: {
        title: "选择所属菜单",
        width: 280,
        height: 450,
        visible: false,
      },
      //树属性定义
      defaultProps: {
        children: "children",
        label: "label",
      },
      parentMenuList: [], //所属菜单列表
      menuList: [], //菜单列表
      tableHeight: 0, //表格高度
    };
  },
  methods: {
    /**
     * 查询菜单列表
     */
    async search() {
      //发送查询请求
      let res = await menuApi.getMenuList();
      //判断是否成功
      if (res.success) {
        //赋值
        this.menuList = res.data;
      }
    },
    /**
     * 打开添加窗口
     */
    openAddWindow() {
      this.$resetForm("menuForm", this.menu); //清空表单数据
      this.menuDialog.title = "新增菜单"; //设置窗口标题
      this.menuDialog.visible = true; //显示窗口
      this.$nextTick(() => {
        this.$refs["child"].userChooseIcon = ""; //清空菜单图标
      });
    },

    /**
     * 获取图标列表
     */
    getIconList() {
      this.iconList = elementIcons;
    },
    /**
     * 给icon绑定的点击事件
     * @param icon
     */
    setIcon(icon) {
      this.menu.icon = icon;
    },

    /**
     * 添加和修改菜单窗口关闭事件
     */
    onClose() {
      this.menuDialog.visible = false; //关闭窗口
    },
    /**
     * 添加和修改菜单窗口确认事件
     */
    onConfirm() {
      //表单验证
      this.$refs.menuForm.validate(async (valid) => {
        if (valid) {
          let res = null;
          //判断菜单ID是否为空
          if (this.menu.id === "") {
            //发送添加请求
            res = await menuApi.addMenu(this.menu);
          } else {
            //发送修改请求
            res = await menuApi.updateMenu(this.menu);
          }
          //判断是否成功
          if (res.success) {
            this.$message.success(res.message);
            //刷新
            //this.search();
            window.location.reload();
            //关闭窗口
            this.menuDialog.visible = false;
          } else {
            this.$message.error(res.message);
          }
        }
      });
    },

    /**
     * 选择所属菜单
     */
    async selectParentMenu() {
      //显示窗口
      this.parentDialog.visible = true;
      //发送查询请求
      let res = await menuApi.getParentMenuList();
      //判断是否成功
      if (res.success) {
        //赋值
        this.parentMenuList = res.data;
      }
    },
    /**
     * 选择所属菜单取消事件
     */
    onParentClose() {
      this.parentDialog.visible = false; //关闭窗口
    },
    /**
     * 选择所属菜单确认事件
     */
    onParentConfirm() {
      this.parentDialog.visible = false; //关闭窗口
    },
    /**
     * 切换图标
     * @param data
     */
    openBtn(data) {
      data.open = !data.open;
      this.$refs.parentTree.store.nodesMap[data.id].expanded = !data.open;
    },
    /**
     * 所属菜单节点点击事件
     */
    handleNodeClick(data) {
      //所属父级菜单ID
      this.menu.parentId = data.id;
      //所属父级菜单名称
      this.menu.parentName = data.label;
    },
    /**
     * 编辑菜单
     * @param row
     */
    editMenu(row) {
      //把当前要编辑的数据复制到数据域，给表单回显
      this.$objCopy(row, this.menu);
      //设置弹框属性
      this.menuDialog.title = "编辑菜单";
      this.menuDialog.visible = true;
      this.$nextTick(() => {
        this.$refs["child"].userChooseIcon = row.icon; //菜单图标回显
      });
    },
    /**
     * 删除菜单
     * @param row
     */
    async deleteMenu(row) {
      //判断是否存在子菜单
      let result = await menuApi.checkPermission({ id: row.id });
      //判断是否可以删除
      if (!result.success) {
        //提示不能删除
        this.$message.warning(result.message);
      } else {
        //确认是否删除
        let confirm = await this.$myconfirm("确定要删除该数据吗?");
        if (confirm) {
          //发送删除请求
          let res = await menuApi.deleteById({ id: row.id });
          //判断是否成功
          if (res.success) {
            //成功提示
            this.$message.success(res.message);
            //刷新
            this.search();
          } else {
            //失败提示
            this.$message.error(res.message);
          }
        }
      }
    },
  },
  //初始化时调用
  created() {
    //调用查询菜单列表的方法
    this.search();
    //调用获取图标列表
    this.getIconList();
  },
  mounted() {
    this.$nextTick(() => {
      this.tableHeight = window.innerHeight - 180;
    });
  },
};
</script>

<style lang="scss" scoped>
.iconList {
  width: 400px;
  height: 300px;
  overflow-y: scroll;
  overflow-x: hidden;
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;

  i {
    display: inline-block;
    width: 60px;
    height: 45px;
    color: #000000;
    font-size: 20px;
    border: 1px solid #e6e6e6;
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
    line-height: 45px;
    margin: 5px;

    &:hover {
      color: orange;
      border-color: orange;
    }
  }
}

.chooseIcons {
  width: 175px;
  background-color: #ffffff;
  background-image: none;
  border-radius: 4px;
  border: 1px solid #dcdfe6;
  box-sizing: border-box;
  color: #606266;
  display: inline-block;
  font-size: inherit;
  height: 33px;
  line-height: 25px;
  outline: none;
  padding: 0 15px;
  transition: border-color 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
}
</style>